hours until his one and only debate, with congressmanpaulryan. mittromney's runningmate keeping a low public profile. here he is out for coffee. >> joe biden's been on the stage many times before. this is my first time. sure, it's a nervous situation. >> reporter: during their 90- minute debate, they will be sitting at a table at center cool them danville, covering domestic and foreign policy issues, leaving delaware this morning, the vice president seemed upbeat. >> and i'm looking forward to it. >> reporter: he promised an aggressive performance. >> reporter: paul ryan is the intellectual leader of the republican party, according to mitt romney and all we're asking for is an honest conversation of what the impact of the policies will be and that is the vice president's goal, to have that conversation. we'll have it about our policies and they should have it about theirs. >> reporter: his staff hoping that ryan can pull a romney on biden and president obama admitting he had a bad night last week. in fact, first of the three presidential debates. >> and many people suggested tha